EP4154777B1 - Drive device with unidirectional or bidirectional rotation - Google Patents

Drive device with unidirectional or bidirectional rotation Download PDF

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Publication number
EP4154777B1
EP4154777B1 EP22195792.1A EP22195792A EP4154777B1 EP 4154777 B1 EP4154777 B1 EP 4154777B1 EP 22195792 A EP22195792 A EP 22195792A EP 4154777 B1 EP4154777 B1 EP 4154777B1
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EP
European Patent Office
Prior art keywords
rotation
drive device
coupling
coupling member
drive
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Application number
EP22195792.1A
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German (de)
French (fr)
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EP4154777A1 (en
Inventor
David Benoit
Stéphane PLICHON
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SEB SA
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SEB SA
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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J43/00Implements for preparing or holding food, not provided for in other groups of this subclass
    • A47J43/04Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
    • A47J43/07Parts or details, e.g. mixing tools, whipping tools
    • A47J43/08Driving mechanisms
    • A47J43/082Driving mechanisms for machines with tools driven from the upper side
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J43/00Implements for preparing or holding food, not provided for in other groups of this subclass
    • A47J43/04Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
    • A47J43/044Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven with tools driven from the top side
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J43/00Implements for preparing or holding food, not provided for in other groups of this subclass
    • A47J43/10Egg-whisks; Cream-beaters, i.e. hand implements or hand-driven devices
    • A47J43/1006Hand-driven mixing devices with rotating tools, e.g. sticking out from the bottom of the mixing receptacle; with rotating bowls; with an additional function
    • A47J43/105Hand-driven mixing devices with rotating tools, e.g. sticking out from the bottom of the mixing receptacle; with rotating bowls; with an additional function the rotating tools being driven by a reciprocating member, e.g. by a rack-and-pinion mechanism or by a tangentially-pulled rope
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/31Couplings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/32Driving arrangements
    • B01F35/32005Type of drive
    • B01F35/3202Hand driven
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/32Driving arrangements
    • B01F35/321Disposition of the drive
    • B01F35/3214Disposition of the drive at the upper side of the axis, e.g. driving the stirrer from the top of a receptacle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/33Transmissions; Means for modifying the speed or direction of rotation
    • B01F35/332Transmissions; Means for modifying the speed or direction of rotation alternately changing the direction of rotation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/1805Kitchen, household equipment for mixing

Definitions

  • the present invention relates to the field of manual rope drive devices for culinary cutting, mixing or grinding appliances.
  • Numerous mixing or chopping culinary appliances are known from the state of the art. We distinguish in particular between electrical devices in which a drive device using an electric motor rotates a tool which can be a knife or a mixing arm.
  • the main advantage of electric drive devices is that they offer a constant torque and a variable rotation speed which is a direct function of the rotation speed of the electric motor.
  • the document DE 580073 describes a mixing and beating machine, for bakeries, with a continuously variable speed change. Although this machine allows for gear shifting, the gearbox is designed for a machine that must be shifted manually. The operator must therefore adjust the speed manually by operating a gearbox.
  • the document FR 2 532 540 describes a device for making and mixing sauces.
  • the drive of this device has a gear train to change the rotational speed, the gear ratio is fixed and the torque can only be varied by varying the externally applied force.
  • the device for manually chopping food described in the document WO 2004/073474 , which also has a gear in a cover which rotates a cutting tool in the form of a set of knives.
  • the user can activate moving parts of the rope drive unit.
  • a rope drum is driven directly by the rope and is positively coupled into the connection member in one direction of rotation and decoupled in the other direction of rotation from the connection member.
  • An at least two-stage transmission is formed between the rope drive unit and the rotating connection member, which is switchable between a low-speed cutting mode and a precise cutting mode with a higher speed compared to to low speed cutting mode.
  • a return spring is designed to retract the rope pulled by the user and thus prepare for the next pulling movement.
  • the mixer drive shaft at reduced speed and increased torque if the texture of the mixture turns out to be so dense that the return of the rope would be prevented by lack of force of the return spring. It is also possible to use the high rotation speed with the cutting drive shaft if the materials are thin enough to offer less resistance and allow the knives to move back without causing a blockage that would prevent the rope from retract.
  • the coupling member is movable between a first position in which the coupling member is adapted to transmit a movement in a single direction of rotation of the rotation subassembly and a second position in which the coupling member coupling is adapted to transmit a movement in two directions of rotation of the rotation subassembly.
  • the coupling member may comprise a ratchet wheel portion making it possible to transmit movement in a single direction of rotation.
  • the drive device may comprise a first coupling element connected in rotation to the rotation subassembly and adapted to be coupled to the ratchet wheel portion of the coupling member.
  • the coupling member may comprise a portion of a dog wheel making it possible to transmit movement in two directions of rotation.
  • the drive device may comprise a second coupling element adapted to be coupled to the dog wheel portion of the coupling member, to be connected in rotation to the drive member.
  • the Drive Device may comprise a two-stage gear interposed between the first coupling element and second coupling element, to modify a torque and a rotational speed of a movement transmitted from the first coupling element to the second element coupling, when the second coupling element is coupled to the dog wheel portion of the coupling member.
  • the coupling member can be movable in translation between the first position and the second position.
  • the drive device may comprise a lever making it possible to move the coupling member in translation between the first position and the second position.
  • At least one elastic member can exert a force on the lever to automatically position it in the first position.
  • An actuator may be adapted to position and maintain the lever in the second position.
  • the rotation subassembly may comprise a reel comprising a rope and a return spring, the reel rotating the rotation subassembly.
  • the invention relates to a culinary mixer or grinder appliance comprising a drive device according to any one of the preceding claims.
  • the culinary appliance may include a bowl and a lid adapted to close the bowl, the training device may be contained in the lid.
  • the culinary appliance may include a removable food working arm for mixing or grinding, the food working arm being connected to the driver of the training device.
  • the invention proposes a rotational drive device 1 for a culinary mixer or grinder.
  • the coupling member 6 is movable between a first position in which the coupling member 6 is adapted to transmit a movement in a single direction of rotation of the rotation subassembly 29 and a second position in which the coupling member coupling 6 is adapted to transmit a movement in two directions of rotation of the rotation subassembly 29.
  • the coupling member 6 very advantageously allows the transmission mode to be changed to allow unidirectional rotation or bidirectional rotation.
  • a simple movement of the coupling member 6 makes it possible to move from a first unidirectional rotation position to a second bidirectional rotation position and vice versa.
  • This arrangement very advantageously allows the training device 1 to be particularly versatile and to be able to be used both for chopping and for mix. Indeed, for chopping large elements, we will often prefer a unidirectional rotation, and for mixing we will often prefer a bidirectional rotation.
  • the training device 1 comprises a rotation subassembly 29.
  • the rotation subassembly 29 is a reel comprising a rope 24, one end of which is wound around a drive wheel 22 and the other end of which is connected to a handle, and a return spring 26
  • the rotation subassembly 29 advantageously comprises a winding drum or a drive wheel 22 comprising a groove where the rope 24 is housed while winding around the axis of rotation.
  • the drive wheel 22 is a known element which rotates thanks to the traction on a rope 24. When a user pulls on the handle connected to the rope 24, it is completely unwound, then the return spring 26 allows the drive wheel 22 to rotate in the opposite direction and thus rewind the rope 24. It should be noted that the rotation generated by the return spring 26 is opposite to the rotation generated by the rope 24.
  • the drive wheel 22 of the drive device 1 has a cavity intended to receive the return spring 26.
  • the rope 24 is wound in the groove of the drive wheel 22, in the anti-clockwise direction relative to to the axis of rotation and the return spring 26 is arranged in the cavity of the drive wheel 22 wound clockwise relative to the axis of rotation. It can be envisaged that the rope 24 is wound in the groove of the drive wheel 22, clockwise relative to the axis of rotation and the return spring is placed in the cavity of the drive wheel 22 wound counterclockwise relative to the axis of rotation.
  • the rotation subassembly 29 is linked in rotation to a first coupling element 10.
  • the first coupling element 10 presented here is part of the rotation subassembly 29 (it is the same part).
  • the rotation subassembly 29 and the first coupling element 10 can also be two separate parts fixed to each other.
  • the drive device 1 comprises a first coupling element 10 which makes it possible to transmit a rotational movement of the rotation subassembly 29 to the coupling member 6 (when the coupling member 6 is in a first position) or to a second coupling element 12 (when the coupling member 6 is in a second coupling position).
  • the first coupling element 10 is in the form of a wheel with two faces and a edge.
  • One face 10a has a ratchet wheel.
  • the slice 10b has teeth adapted to mesh with a gear 14 which will be described below.
  • the teeth of section 10b can be straight or helical teeth.
  • the face 10a of the first coupling element 10 is adapted to transmit a rotational movement for a single direction of rotation to the ratchet wheel 64 of the coupling member 6.
  • the first coupling element 10 rotates the ratchet wheel 64.
  • the coupling between the ratchet wheel 64 and the first element coupling 10 is not possible, and there is no rotation transmission.
  • the slice 10b makes it possible to transmit a bidirectional rotational movement (i.e. whatever the direction of rotation) to a gear 14.
  • the first coupling element 10 can be made of metal (such as steel, stainless steel, or aluminum), polymer material or composite material.
  • the coupling member 6 is in the form of a part of revolution having a T-shaped section.
  • the coupling member 6 has a shaft portion 61 axial and a transverse wheel 62.
  • the coupling member 6 is hollow to accommodate the drive member 30.
  • the coupling member 6 may have a bore with grooves to have a grooved connection with the drive member 30.
  • the splines are particularly suited to transmitting a rotational torque.
  • the coupling member 6 comprises a ratchet wheel portion 64 making it possible to transmit a movement in a single direction of rotation.
  • the transverse wheel 62 comprises the ratchet wheel portion 64.
  • ratchet wheel is an anti-return device forcing a rotating mechanism to turn in one direction. This wheel is fitted all around with notches causing a pawl (or a complementary ratchet wheel) to lift in the desired direction to allow it passage but blocked by it in the other direction. In a known manner, ratchet wheels are found in freewheel mechanisms.
  • the ratchet wheel portion 64 is adapted to cooperate with the ratchet wheel of the face 10a of the first drive element 10, when the coupling member 6 is in a first coupling position.
  • the coupling member 6 comprises a portion of a dog wheel 68 making it possible to transmit movement in two directions of rotation.
  • the transverse wheel 62 comprises the dog wheel portion 68.
  • a clutch is the direct coupling of two metal parts by teeth and grooves.
  • a clutch system is a mechanical system which connects two rotating parts by means of clutches. By integral it is understood that the two parts are linked in rotation so as to form only one mechanical assembly. mobile in rotation.
  • the clutch wheel portion 68 is adapted to cooperate with a second coupling element which will be described below, when the coupling member 6 is in a second coupling position.
  • the ratchet wheel portion 64 and the dog wheel portion 68 both form parts of the transverse wheel 62. More precisely, according to the embodiment presented on the figures 1 to 7 , the ratchet wheel portion 64 and the dog wheel portion 68 each constitute a face of the transverse wheel 62. According to this embodiment, the ratchet wheel portion 64 and the dog wheel portion 68 are axially opposed . As will be described below, this is an advantageous arrangement making it possible to move from a unidirectional rotation mode to a bidirectional rotation mode by a simple translation of the coupling member 6.
  • the coupling member 6 comprises a shoulder 69 positioned at one end of the shaft portion 61.
  • the shoulder 69 is adapted to cooperate with a lever 8.
  • the coupling member 6 can be made of metal (such as steel, stainless steel, or aluminum), polymer material or composite material.
  • the drive member 30 is a part of revolution having a grooved exterior surface designed and configured to be introduced into a bore of the coupling member 6. As indicated previously, the grooves are a particularly advantageous arrangement, allowing optimal transmission of a couple. It is specified that the spline connection makes the drive member 30 integral in rotation with the coupling member 6.
  • the drive member 30 has a prismatic footprint adapted to receive one end of a food processing arm.
  • the prismatic footprint can for example be hexagonal, this geometry being particularly suitable for transmitting a torque and a rotational movement.
  • the drive device 1 comprises a second coupling element 12 which makes it possible to transmit a rotation of the first coupling element 10 to the coupling member 6, when the coupling member 6 is in a second position.
  • the second coupling element 12 is a complementary rotation transmission member of the dog wheel 68.
  • the second coupling element 12 is adapted to transmit a rotational movement for the two directions of rotation of the dog wheel 68.
  • the coupling element 10b transmits rotation to the coupling element 14, 14a being engaged with 10b and 14b being engaged with 12b, thus 12 is driven in rotation in turn, the second coupling element 12a drives the dog wheel 68 in rotation and transmits this rotational movement, whatever the direction of rotation of the dog wheel 68 (and therefore of the drive member 30).
  • the second coupling element 12 may have a portion of a dog wheel complementary to the dog wheel 68.
  • the second coupling element 12 is in the form of a wheel with two faces and a edge.
  • a face 12a is adapted to be coupled to the dog wheel 68.
  • the edge 12b has teeth adapted to mesh with a gear 14 which will be described below.
  • the teeth of section 12b can be straight or helical teeth.
  • the second coupling element 12 can be made of metal (such as steel, stainless steel, or aluminum), polymer material or composite material.
  • the rotation sub-assembly 29, the first coupling element 10, the coupling member 6, the second coupling element 12 and the drive member 30 are rotating movable parts.
  • these parts are movable in rotation around the same axis of rotation and are stacked on a primary shaft 2. It is specified that according to the example presented here the primary shaft 2 is fixed and does not transmits no torque. Thus, according to the embodiment presented here, the primary shaft 2 only has a centering and rotation guiding function.
  • the drive device 1 comprises a gear 14 positioned on a secondary shaft 4.
  • the secondary shaft 4 is fixed and simply fulfills a rotational centering function. gear 14.
  • the gear 14 makes it possible to connect in rotation the first coupling element 10 and the second coupling element 12, when the coupling member is in the second coupling position.
  • the gear 14 makes it possible to modify a torque and a rotational speed of a movement transmitted from the first coupling element 10 to the second element 12.
  • the gear 14 consists of two toothed wheels 14a and 14b stacked axially relative to the secondary shaft 4.
  • a first toothed wheel 14a is adapted to be meshed with the first coupling element 10, and more particularly, with the edge 10b of the first coupling element 10.
  • a second toothed wheel 14b is adapted to be meshed with the second coupling element 12, and more particularly, with the edge 12b of the second coupling element 12.
  • the first toothed wheel 14a and the second toothed wheel 14b can have different diameters.
  • This arrangement makes it possible to have a different transmission ratio between the two gear wheels.
  • the first coupling element 10 is meshed with the first toothed wheel 14a, the rotation speed and the torque transmitted by the second toothed wheel 14b to the second coupling element 12.
  • the difference in diameter between the first toothed wheel 14a and the second toothed wheel 14b makes it possible to modify the speed of rotation and the transmitted torque.
  • the gear 14 is chosen to allow an increase in the rotation speed, so that the rotation speed of the second coupling element 12 is greater than the rotation speed of the first coupling element 10.
  • the gear 14 in combination with the first coupling element 10 and the second coupling element 12 forms a gearbox.
  • the coupling member 6 is movable in translation between two coupling positions.
  • the movement and maintenance in position of the coupling member 6 is enabled by movement means.
  • the movement means comprise at least one elastic member 16, a lever 8 and an actuator 20.
  • the movement means comprise two elastic members 16a and 16b.
  • the elastic members 16a and 16b are spiral springs.
  • the actuator 20 can be a push button.
  • the lever 8 is fixed to the actuator 20 by a screw.
  • the lever 8 and the actuator 20 are integral in translation.
  • One end of the lever 8 has the shape of a two-pronged fork. This end is adapted to be positioned against the shoulder 69 to move the coupling member 6 in translation, between the first coupling position and the second coupling position.
  • pressing the actuator by a user makes it possible to move the lever 8 in translation to move from the first coupling position to the second coupling position.
  • the two elastic members 16a and 16b are positioned so as to counter the movement of the actuator.
  • the two elastic members 16a and 16b maintain the lever 8 in the first coupling position.
  • the elastic members 16a and 16b maintain the lever 8 in the first position (ie it is necessary for a user to maintain pressure on the actuator 20 to position and maintain the lever in the second position.
  • the elastic members 16a and 16b exert a effort on lever 8 to automatically position it in first position
  • the invention also relates to a culinary appliance 100 mixer and/or grinder comprising a drive device 1 according to the invention.
  • the culinary appliance 100 includes a bowl 101 and a lid 102 designed and configured to close the bowl 101.
  • the drive device 1 is contained in the cover 102.
  • the culinary appliance 100 may include a food working arm for mixing or grinding.
  • a food working arm is positioned in the bowl 101 and connected to the drive member 30 of the drive device 1.
  • the training device 1 is integrated into a culinary appliance 100.
  • the operation of the training device 1 does not change, whether or not it is integrated into a culinary appliance 100.
  • the lever 8 naturally positions (by default) the coupling member 6 in the first coupling position. In this position only unidirectional rotation is permitted.
  • This position is preferable for cutting hard foods, such as hazelnuts.
  • a user will connect a working arm provided with sharp blades to the drive member 30.
  • the rotation of the rotation subassembly 29 is directly transmitted to the coupling member 6 via the face 10a in contact with the face 64
  • the first coupling element 10 drives in rotation the coupling member 6, which is integral in rotation with the drive member 30, and the drive member 30 rotates a set of knives (or another culinary tool of a food processing arm).
  • the user lets the return spring rewind it.
  • the rotation subassembly 29 and the first coupling element 10 then rotate in the opposite direction.
  • the ratchet wheel 64 does not allow the transmission of the rotational movement of the first coupling element 10 to the coupling member 6.
  • This arrangement is particularly advantageous in the case where the user wishes to chop hard foods because it is preferable that the blades of the working arm rotate only under the action of the pulling of the rope 24 (maximum force) and disengage when the spring 26 rewinds the rope on 10.
  • most work arms equipped with blades have only one cutting side.
  • the chopped pieces become smaller and smaller, so it may become interesting to increase the rotation speed of the knives.
  • the culinary appliance is used to make a mixture or an emulsion, the user will prefer to have a high rotation speed of the tool.
  • the user can press the actuator 20. While pressed, the actuator 20 moves the lever 8 in translation. The movement of the lever 8 positions the cutting member 6 in the second coupling position. In this position, the dog wheel 68 of the coupling member 6 is coupled to the second coupling element 12.
  • coupling with dogs makes it possible to have a bidirectional rotation transmission.
  • the rotation of the rotation subassembly 29 is transmitted to the first coupling element 14a via the side faces 10b, the side faces 14b in turn transmit a rotational movement to the element 12 via the face 12b .
  • the face 12a transmits via the face 68 a rotational movement to the part 6.
  • the part 6 via the internal grooves finally transmits a rotational movement to the part 30 and therefore to the working arm.
  • the claw connection allows that whatever the direction of rotation of the rotation sub-assembly 29 (direction of rotation of traction of the rope or opposite direction of rotation of the rewound by the return spring), this rotational movement will be transmitted to the drive member 30.
  • the coupling member 6 when the coupling member 6 is in the second coupling position, whatever the direction of rotation of the rotation sub-assembly 29 and the coupling member 6, the rotation is transmitted to the second coupling element 12.
  • the reduction ratio of the connection between the lateral face 10b, the gear 14 and the second coupling element 12 is chosen to favor a high speed (compared to the rotation speed obtained when the coupling member is in the first coupling position).
  • This arrangement is particularly advantageous because it avoids potential confusion for the user. He knows that by default, the coupling member 6 is in the first coupling position. In addition, this arrangement helps protect the equipment. Indeed, it is preferable to have a lower rotation speed by default. Otherwise, the equipment could be damaged if a user starts grinding a large piece of meat at high speed. The work arm would not have enough torque to cut the meat.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Food-Manufacturing Devices (AREA)

Description

DOMAINE DE L'INVENTIONFIELD OF THE INVENTION

La présente invention concerne le domaine des dispositifs d'entrainement manuel à corde pour les appareils culinaires découpeurs, mélangeurs ou broyeurs.The present invention relates to the field of manual rope drive devices for culinary cutting, mixing or grinding appliances.

ETAT DE LA TECHNIQUESTATE OF THE TECHNIQUE

De nombreux appareils culinaires mélangeurs ou hacheurs sont connus de l'état de la technique. On distingue notamment les appareils électriques dans lesquels un dispositif d'entrainement à l'aide d'un moteur électrique entraine en rotation un outil qui peut être un couteau ou un bras mélangeur.Numerous mixing or chopping culinary appliances are known from the state of the art. We distinguish in particular between electrical devices in which a drive device using an electric motor rotates a tool which can be a knife or a mixing arm.

Les dispositifs d'entrainement électriques ont pour principal avantage d'offrir un couple constant et une vitesse de rotation variable qui est directement fonction de la vitesse de rotation du moteur électrique.The main advantage of electric drive devices is that they offer a constant torque and a variable rotation speed which is a direct function of the rotation speed of the electric motor.

Ces dispositifs d'entrainement électriques permettent très avantageusement d'offrir un couple et une vitesse de rotation élevés. Néanmoins, ils imposent d'être raccordés à une prise électrique, ils sont consommateur d'énergie et surtout ils sont sujets aux pannes du moteur électrique. Or le plus souvent il est moins couteux de changer l'intégralité du dispositif d'entrainement, plutôt que de le réparer, ce qui est générateur de déchets. Les appareils culinaires à dispositif d'entrainement électrique présentent donc le double inconvénient d'être consommateur d'énergie et générateur de déchet.These electric drive devices very advantageously make it possible to offer high torque and rotation speed. However, they require being connected to an electrical outlet, they consume energy and above all they are subject to breakdowns of the electric motor. However, most often it is less expensive to change the entire drive device, rather than repairing it, which generates waste. Culinary appliances with an electric drive device therefore have the double disadvantage of being a consumer of energy and a generator of waste.

Dans ce contexte, des dispositifs d'entrainement manuel sont étudiés. Ainsi, d'une manière classique, on connaît l'essoreuse à salade dont le panier est entraîné en rotation par un cordon déroulé par l'utilisateur puis enroulé par un ressort de rappel. Sur ce principe, de nombreux dispositifs d'entrainement ont été proposés.In this context, manual training devices are studied. Thus, in a classic manner, we know the salad spinner whose basket is rotated by a cord unwound by the user then wound by a return spring. On this principle, numerous training devices have been proposed.

On peut citer par exemple le document US 2009/0178580 qui décrit un ensemble de couteaux entraîné dans un bol pour hacher des aliments via le dispositif d'entraînement manuel. Le dispositif décrit dans ce document présente l'inconvénient que le couple transmis à l'ensemble de couteaux ne peut pas être adapté de manière optimale à l'outil de coupe ou de mélange. Par exemple, lorsque vous coupez des oignons ou des pommes, au début du mouvement, lorsque les aliments sont grossièrement découpés et volumineux, vous devez appliquer un couple plus important qu'à la fin du processus car ces denrées alimentaires présentent une résistance plus importante à la coupe. Plus tard, au cours du processus de coupe, lorsque les aliments sont plus finement découpés et moins volumineux, vous souhaitez obtenir une vitesse et une dynamique plus grandes dans le bol. Pour cela il est nécessaire pour mélanger les morceaux d'augmenter la vitesse de rotation et de réduire le couple. En effet, dans le cas d'une transmission manuelle d'un mouvement, d'une manière connue, le couple et la vitesse de rotation sont deux paramètres antagonistes. Pour augmenter le couple, il faut réduire la vitesse, et vice-versa.We can cite for example the document US 2009/0178580 which describes a set of knives driven into a bowl for chopping food via the manual drive device. The device described in this document has the disadvantage that the torque transmitted to the set of knives cannot be optimally adapted to the cutting or mixing tool. For example, when cutting onions or apples, at the beginning of the movement, when the food is roughly cut and bulky, you must apply a greater torque than at the end of the process because these foodstuffs present greater resistance to the cup. Later, during the cutting process, when food is more finely cut and less bulky, you want to get greater speed and dynamics in the bowl. For this it is necessary to mix the pieces to increase the rotation speed and reduce the torque. Indeed, in the case of a manual transmission of a movement, in a known manner, the torque and the speed of rotation are two antagonistic parameters. To increase torque, you must reduce speed, and vice versa.

On connaît aussi le document WO 2006/114252 qui décrit une centrifugeuse pour un dispositif de séchage dans laquelle un dispositif d'entraînement manuel de broche est utilisé. Dans cette centrifugeuse, un écrou de broche en contact avec le filetage d'une broche est déplacé le long de son axe longitudinal par rapport à la broche. Le filetage de la broche est constant sur toute la longueur du pas de filetage de la broche. Le mouvement relatif de l'écrou de broche par rapport à la broche provoque la rotation de la broche et d'un arbre portant la broche, qui est couplée à un balai laveur, autour de l'axe longitudinal. Néanmoins ce dispositif d'entraînement présente un couple et une vitesse de rotation constants.We also know the document WO 2006/114252 which describes a centrifuge for a drying device in which a manual spindle drive device is used. In this centrifuge, a spindle nut in contact with the thread of a spindle is moved along its longitudinal axis relative to the spindle. The spindle thread is constant over the entire length of the spindle thread pitch. Relative movement of the spindle nut relative to the spindle causes rotation of the spindle and a shaft carrying the spindle, which is coupled to a scrubber, about the longitudinal axis. However, this drive device has a constant torque and rotation speed.

Le document DE 580073 décrit une machine à mélanger et battre, pour les boulangeries, avec un changement de vitesse continuellement variable. Bien que cette machine permette un changement de vitesse, la boîte de vitesses est conçue pour une machine qui doit être commutée manuellement. L'opérateur doit donc régler la vitesse manuellement en actionnant une boite de vitesse.The document DE 580073 describes a mixing and beating machine, for bakeries, with a continuously variable speed change. Although this machine allows for gear shifting, the gearbox is designed for a machine that must be shifted manually. The operator must therefore adjust the speed manually by operating a gearbox.

Le document FR 2 532 540 décrit un appareil pour réaliser et mélanger des sauces. Bien que le dispositif d'entrainement de cet appareil possède un train d'engrenage pour modifier la vitesse de rotation, le rapport d'engrenage est fixe et le couple ne peut varier qu'en faisant varier la force appliquée de l'extérieur. Il en va de même pour l'appareil à hacher manuellement des aliments, décrit dans le document WO 2004/073474 , qui comporte également un engrenage dans un couvercle qui entraîne en rotation un outil de coupe sous la forme d'un ensemble de couteaux.The document FR 2 532 540 describes a device for making and mixing sauces. Although the drive of this device has a gear train to change the rotational speed, the gear ratio is fixed and the torque can only be varied by varying the externally applied force. The same applies to the device for manually chopping food, described in the document WO 2004/073474 , which also has a gear in a cover which rotates a cutting tool in the form of a set of knives.

On peut aussi citer le hachoir alimentaire connu du document EP 2015660 B1 . En tirant sur une corde, l'utilisateur peut activer les pièces mobiles de l'unité de traction par corde. Un tambour à corde est entraîné directement par la corde. Celui-ci est couplé dans un sens de rotation via un embrayage à roue libre avec un élément de connexion. À son tour, un épaulement de la colonne de couteaux peut être inséré dans l'élément de connexion afin de produire une connexion positive dans le sens de la rotation. En tirant la corde, la colonne de couteaux mise en rotation. Les couteaux attachés frappent l'aliment à découper dans le récipient et le coupe.We can also cite the food chopper known from the document EP 2015660 B1 . By pulling a rope, the user can activate the moving parts of the rope traction unit. A rope drum is driven directly by the rope. This is coupled in one direction of rotation via a freewheel clutch with a connecting element. In turn, a shoulder of the knife column can be inserted into the connection member to produce a positive connection in the direction of rotation. By pulling the rope, the column of knives rotating. The attached knives hit the food to be cut into the container and cut it.

De même, avec le hachoir alimentaire connu du document DE102013112225 , en tirant sur une corde, l'utilisateur peut activer des pièces mobiles de l'unité d'entraînement à corde. Un tambour à corde est entraîné directement par la corde et est couplé positivement dans l'élément de connexion dans un sens de rotation et découplé dans l'autre sens de rotation de l'élément de connexion. Une transmission au moins à deux étages est formée entre l'unité d'entraînement à corde et l'élément de connexion rotatif, laquelle est commutable entre un mode de coupe à faible vitesse et un mode de coupe précise avec une vitesse plus élevée par rapport au mode de coupe à faible vitesse.Likewise, with the food chopper known from the document DE102013112225 , by pulling a rope, the user can activate moving parts of the rope drive unit. A rope drum is driven directly by the rope and is positively coupled into the connection member in one direction of rotation and decoupled in the other direction of rotation from the connection member. An at least two-stage transmission is formed between the rope drive unit and the rotating connection member, which is switchable between a low-speed cutting mode and a precise cutting mode with a higher speed compared to to low speed cutting mode.

Dans l'autre sens de rotation, la colonne de couteaux est découplée via l'embrayage à roue libre de l'entraînement à corde, de sorte que la corde de traction puisse être dépassée sans encombre. Dans l'unité d'entraînement à corde, un ressort de rappel est conçu pour rétracter la corde tirée par l'utilisateur et ainsi préparer le prochain mouvement de tirage.In the other direction of rotation, the knife column is decoupled via the overrunning clutch from the rope drive, so that the traction rope can be passed unhindered. In the rope training unit, a return spring is designed to retract the rope pulled by the user and thus prepare for the next pulling movement.

Cependant, il a été démontré qu'il est souhaitable de pouvoir accélérer la vitesse de rotation de l'arbre d'entrainement du mélangeur pour un brassage plus efficace. Pour un brassage, une vitesse angulaire élevée de l'arbre d'entrainement du mélangeur est souhaitable, de sorte que le nombre de tours par minutes augmentent, permettant ainsi un brassage plus rapide. Cependant, pour ce faire, l'utilisateur doit tirer sur la corde avec force et très rapidement, compte tenu du rapport de démultiplication du dispositif d'entraînement. Pour le broyage, une force de coupe plus importante est nécessaire, car le matériau à couper est initialement non broyé et peut se révéler dur. Si la préparation alimentaire à mélanger est liquide ou composé de pièces plus petites et tendres, la force requise est réduite et la vitesse peut être augmentée. Il est cependant possible d'utiliser l'arbre d'entrainement du mélangeur à vitesse réduite et couple augmenté si la texture du mélange se révélait être si dense que le retour de la corde serait empêché par manque de force du ressort de rappel. Il est également possible d'utiliser la vitesse de rotation élevée avec l'arbre d'entrainement de découpe si les matériaux sont suffisamment fins pour offrir moins de résistance et permettre aux couteaux de revenir en arrière sans exercer un blocage qui empêcherait la corde de se rétracter.However, it has been demonstrated that it is desirable to be able to accelerate the rotational speed of the mixer drive shaft for more efficient mixing. For mixing, a high angular speed of the mixer drive shaft is desirable, so that the number of revolutions per minute increases, thereby allowing faster mixing. However, to do this, the user must pull the rope forcefully and very quickly, taking into account the gear ratio of the training device. For grinding, a greater cutting force is required, because the material to be cut is initially ungrinded and may turn out to be hard. If the food preparation to be mixed is liquid or composed of smaller, softer pieces, the force required is reduced and the speed can be increased. It is however possible to use the mixer drive shaft at reduced speed and increased torque if the texture of the mixture turns out to be so dense that the return of the rope would be prevented by lack of force of the return spring. It is also possible to use the high rotation speed with the cutting drive shaft if the materials are thin enough to offer less resistance and allow the knives to move back without causing a blockage that would prevent the rope from retract.

Dans ce contexte, il est nécessaire de fournir un dispositif d'entrainement pour un appareil culinaire mélangeur ou broyeur qui permette d'alterner simplement entre une rotation unidirectionnelle et une rotation bidirectionnelle.In this context, it is necessary to provide a drive device for a culinary mixer or grinder appliance which makes it possible to simply alternate between unidirectional rotation and bidirectional rotation.

EXPOSE DE L'INVENTIONSTATEMENT OF THE INVENTION

Selon un premier aspect, l'invention propose un dispositif d'entrainement en rotation pour un appareil culinaire mélangeur ou broyeur, le dispositif d'entrainement comprenant,

  • (i) un sous ensemble de mise en rotation,
  • (ii un organe d'entrainement en rotation d'un bras de travail des aliments et,
  • (iii) un organe de couplage en rotation du sous ensemble de mise en rotation avec l'organe d'entrainement pour transmettre un mouvement de rotation du sous ensemble de mise en rotation à l'organe d'entrainement.
According to a first aspect, the invention proposes a rotation drive device for a culinary mixer or grinder appliance, the drive device comprising,
  • (i) a rotation subassembly,
  • (ii a rotating drive member of a food processing arm and,
  • (iii) a rotational coupling member of the rotation subassembly with the drive member to transmit a rotational movement of the rotation subassembly to the drive member.

De plus, l'organe de couplage est mobile entre une première position dans laquelle l'organe de couplage est adapté pour transmettre un mouvement selon un unique sens de rotation du sous ensemble de mise en rotation et une deuxième position dans laquelle l'organe de couplage est adapté pour transmettre un mouvement selon deux sens de rotation du sous ensemble de mise en rotation.In addition, the coupling member is movable between a first position in which the coupling member is adapted to transmit a movement in a single direction of rotation of the rotation subassembly and a second position in which the coupling member coupling is adapted to transmit a movement in two directions of rotation of the rotation subassembly.

L'organe de couplage peut comprendre une portion de roue à rochet permettant de transmettre un mouvement selon un unique sens de rotation.The coupling member may comprise a ratchet wheel portion making it possible to transmit movement in a single direction of rotation.

Le dispositif d'entrainement peut comprendre un premier élément d'accouplement relié en rotation au sous ensemble de mise en rotation et adapté pour être accouplé à la portion de roue à rochet de l'organe de couplage.The drive device may comprise a first coupling element connected in rotation to the rotation subassembly and adapted to be coupled to the ratchet wheel portion of the coupling member.

L'organe de couplage peut comprendre une portion de roue à crabots permettant de transmettre un mouvement selon deux sens de rotation.The coupling member may comprise a portion of a dog wheel making it possible to transmit movement in two directions of rotation.

Le dispositif d'entrainement peut comprendre un deuxième élément d'accouplement adapté pour être accouplé à la portion de roue à crabots de l'organe de couplage, pour être relié en rotation à l'organe d'entrainement.The drive device may comprise a second coupling element adapted to be coupled to the dog wheel portion of the coupling member, to be connected in rotation to the drive member.

Le Dispositif d'entrainement peut comprendre un engrenage à deux étages interposé entre le premier élément d'accouplement et deuxième élément d'accouplement, pour modifier un couple et une vitesse de rotation d'un mouvement transmis du premier élément d'accouplement au deuxième élément d'accouplement, lorsque le deuxième élément d'accouplement est accouplé à la portion de roue à crabots de l'organe de couplage.The Drive Device may comprise a two-stage gear interposed between the first coupling element and second coupling element, to modify a torque and a rotational speed of a movement transmitted from the first coupling element to the second element coupling, when the second coupling element is coupled to the dog wheel portion of the coupling member.

L'organe de couplage peut être mobile en translation entre la première position et la deuxième position.The coupling member can be movable in translation between the first position and the second position.

Le dispositif d'entrainement peut comprendre un levier permettant de déplacer en translation l'organe de couplage entre la première position et la deuxième position.The drive device may comprise a lever making it possible to move the coupling member in translation between the first position and the second position.

Au moins un organe élastique peut exercer un effort sur le levier pour le positionner automatiquement en première position.At least one elastic member can exert a force on the lever to automatically position it in the first position.

Un actionneur peut être adapté pour positionner et maintenir le levier en deuxième position.An actuator may be adapted to position and maintain the lever in the second position.

Le sous ensemble de mise en rotation peut comprendre un enrouleur comprenant une corde et un ressort de rappel, l'enrouleur entraînant en rotation le sous ensemble de mise en rotation.The rotation subassembly may comprise a reel comprising a rope and a return spring, the reel rotating the rotation subassembly.

Selon un autre aspect, l'invention concerne un appareil culinaire mélangeur ou broyeur comprenant un dispositif d'entrainement selon l'une quelconque des revendications précédentes.According to another aspect, the invention relates to a culinary mixer or grinder appliance comprising a drive device according to any one of the preceding claims.

L'appareil culinaire peut comprendre un bol et un couvercle adapté pour fermer le bol, le dispositif d'entrainement pouvant être contenu dans le couvercle.The culinary appliance may include a bowl and a lid adapted to close the bowl, the training device may be contained in the lid.

L'appareil culinaire peut comprendre un bras de travail des aliments amovible pour mélanger ou broyer, le bras de travail des aliments étant connecté à l'organe d'entrainement du dispositif d'entrainement.The culinary appliance may include a removable food working arm for mixing or grinding, the food working arm being connected to the driver of the training device.

DESCRIPTION DES FIGURESDESCRIPTION OF FIGURES

D'autres caractéristiques, buts et avantages de l'invention ressortiront de la description qui suit, qui est purement illustrative et non limitative, et qui doit être lue en regard du dessin annexé sur lequel :

  • [Fig. 1] La figure 1 est une représentation éclatée en perspective d'un dispositif d'entrainement selon l'invention.
  • [Fig. 2] La figure 2 est une représentation éclatée de côté d'un dispositif d'entrainement selon l'invention.
  • [Fig. 3] La figure 3 est une représentation partielle éclatée en perspective d'un dispositif d'entrainement selon l'invention.
  • [Fig. 4] La figure 4 est une représentation partielle éclatée en perspective d'un dispositif d'entrainement selon l'invention.
  • [Fig. 5] La figure 5 est une représentation en coupe de côté d'un dispositif d'entrainement selon l'invention.
  • [Fig. 6] La figure 6 est une représentation en double coupe de côté d'un dispositif d'entrainement selon l'invention, lorsque l'organe de couplage est dans une première position.
  • [Fig. 7] La figure 7 est une représentation en double coupe de côté d'un dispositif d'entrainement selon l'invention, lorsque l'organe de couplage est dans une deuxième position.
  • [Fig. 8] La figure 8 est une représentation en perspective d'un couvercle d'un appareil culinaire selon l'invention.
  • [Fig. 9] La figure 9 est une représentation en perspective d'un appareil culinaire selon l'invention.
Other characteristics, aims and advantages of the invention will emerge from the description which follows, which is purely illustrative and not limiting, and which must be read with reference to the appended drawing in which:
  • [ Fig. 1 ] There figure 1 is an exploded perspective representation of a training device according to the invention.
  • [ Fig. 2 ] There figure 2 is an exploded side view of a training device according to the invention.
  • [ Fig. 3 ] There Figure 3 is a partial exploded perspective representation of a training device according to the invention.
  • [ Fig. 4 ] There Figure 4 is a partial exploded perspective representation of a training device according to the invention.
  • [ Fig. 5 ] There figure 5 is a side sectional representation of a training device according to the invention.
  • [ Fig. 6 ] There Figure 6 is a double side sectional representation of a drive device according to the invention, when the coupling member is in a first position.
  • [ Fig. 7 ] There figure 7 is a double side sectional representation of a drive device according to the invention, when the coupling member is in a second position.
  • [ Fig. 8 ] There figure 8 is a perspective representation of a cover of a culinary appliance according to the invention.
  • [ Fig. 9 ] There Figure 9 is a perspective representation of a culinary appliance according to the invention.

DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION Dispositif d'entrainementTraining device

Selon un premier aspect, en référence aux figures 1 à 7, l'invention propose un dispositif d'entrainement 1 en rotation pour un appareil culinaire mélangeur ou broyeur.According to a first aspect, with reference to figures 1 to 7 , the invention proposes a rotational drive device 1 for a culinary mixer or grinder.

Le dispositif d'entrainement 1 comprend principalement,

  1. (i) un sous ensemble de mise en rotation 29,
  2. (ii) un organe d'entrainement 30 en rotation d'un bras de travail des aliments.et,
  3. (iii) un organe de couplage 6 en rotation du sous ensemble de mise en rotation 29 avec l'organe d'entrainement 30 pour transmettre un mouvement de rotation du sous ensemble de mise en rotation 29 à l'organe d'entrainement 30.
The training device 1 mainly comprises,
  1. (i) a rotation subassembly 29,
  2. (ii) a rotating drive member 30 of a food processing arm, and,
  3. (iii) a rotational coupling member 6 of the rotation subassembly 29 with the drive member 30 to transmit a rotational movement of the rotation subassembly 29 to the drive member 30.

L'organe de couplage 6 est mobile entre une première position dans laquelle l'organe de couplage 6 est adapté pour transmettre un mouvement selon un unique sens de rotation du sous ensemble de mise en rotation 29 et une deuxième position dans laquelle l'organe de couplage 6 est adapté pour transmettre un mouvement selon deux sens de rotation du sous ensemble de mise en rotation 29.The coupling member 6 is movable between a first position in which the coupling member 6 is adapted to transmit a movement in a single direction of rotation of the rotation subassembly 29 and a second position in which the coupling member coupling 6 is adapted to transmit a movement in two directions of rotation of the rotation subassembly 29.

Ainsi, l'organe de couplage 6 permet très avantageusement de changer de mode de transmission pour permettre une rotation unidirectionnelle ou une rotation bidirectionnelle. En d'autres termes, tel que cela sera détaillé ci-après, un simple déplacement de l'organe de couplage 6 permet de passer d'une première position de rotation unidirectionnelle à une deuxième position de rotation bidirectionnelle et vice et versa. Cette disposition permet très avantageusement au dispositif d'entrainement 1 d'être particulièrement versatile et de pouvoir être utilisé aussi bien pour hacher que pour mélanger. En effet, pour hacher de gros éléments, on préférera souvent une rotation unidirectionnelle, et pour mélanger on préférera souvent une rotation bidirectionnelle.Thus, the coupling member 6 very advantageously allows the transmission mode to be changed to allow unidirectional rotation or bidirectional rotation. In other words, as will be detailed below, a simple movement of the coupling member 6 makes it possible to move from a first unidirectional rotation position to a second bidirectional rotation position and vice versa. This arrangement very advantageously allows the training device 1 to be particularly versatile and to be able to be used both for chopping and for mix. Indeed, for chopping large elements, we will often prefer a unidirectional rotation, and for mixing we will often prefer a bidirectional rotation.

Sous ensemble de mise en rotationRotation subassembly

Le dispositif d'entrainement 1 comprend un sous ensemble de mise en rotation 29.The training device 1 comprises a rotation subassembly 29.

Typiquement, le sous ensemble de mise en rotation 29 est un enrouleur comprenant une corde 24, dont une extrémité est enroulée autour d'une roue d'entrainement 22 et dont l'autre extrémité est reliée à une poignée, et un ressort de rappel 26. Le sous ensemble de mise en rotation 29 comprend avantageusement un tambour enrouleur ou une roue d'entrainement 22 comprenant une gorge où vient se loger la corde 24 en s'enroulant autour de l'axe de rotation. La roue d'entraînement 22 est un élément connu qui entre en rotation grâce à la traction sur une corde 24. Lorsqu'un utilisateur tire sur la poignée reliée à la corde 24, celle-ci est complètement déroulée, alors le ressort de rappel 26 permet à la roue d'entraînement 22 de tourner en sens inverse et ainsi réenrouler la corde 24. Il est à noter que la rotation engendrée par le ressort de rappel 26 est inverse à la rotation engendrée par la corde 24.Typically, the rotation subassembly 29 is a reel comprising a rope 24, one end of which is wound around a drive wheel 22 and the other end of which is connected to a handle, and a return spring 26 The rotation subassembly 29 advantageously comprises a winding drum or a drive wheel 22 comprising a groove where the rope 24 is housed while winding around the axis of rotation. The drive wheel 22 is a known element which rotates thanks to the traction on a rope 24. When a user pulls on the handle connected to the rope 24, it is completely unwound, then the return spring 26 allows the drive wheel 22 to rotate in the opposite direction and thus rewind the rope 24. It should be noted that the rotation generated by the return spring 26 is opposite to the rotation generated by the rope 24.

La roue d'entrainement 22 du dispositif d'entrainement 1 présente une cavité destinée à recevoir le ressort de rappel 26. Avantageusement, la corde 24 est enroulée dans la gorge de la roue d'entrainement 22, dans le sens anti-horaire par rapport à l'axe de rotation et le ressort de rappel 26 est disposé dans la cavité de la roue d'entrainement 22 enroulé dans le sens horaire par rapport à l'axe de rotation. Il peut être envisagé que la corde 24 soit enroulée dans la gorge de la roue d'entrainement 22, dans le sens horaire par rapport à l'axe de rotation et le ressort de rappel soit disposé dans la cavité de la roue d'entrainement 22 enroulé dans le sens anti-horaire par rapport à l'axe de rotation.The drive wheel 22 of the drive device 1 has a cavity intended to receive the return spring 26. Advantageously, the rope 24 is wound in the groove of the drive wheel 22, in the anti-clockwise direction relative to to the axis of rotation and the return spring 26 is arranged in the cavity of the drive wheel 22 wound clockwise relative to the axis of rotation. It can be envisaged that the rope 24 is wound in the groove of the drive wheel 22, clockwise relative to the axis of rotation and the return spring is placed in the cavity of the drive wheel 22 wound counterclockwise relative to the axis of rotation.

Le sous ensemble de mise en rotation 29 est lié en rotation à un premier élément d'accouplement 10.The rotation subassembly 29 is linked in rotation to a first coupling element 10.

Selon le mode de réalisation ici présenté, le premier élément d'accouplement 10 ici présenté fait partie du sous-ensemble de mise en rotation 29 (il s'agit de la même pièce). Néanmoins le sous ensemble de mise en rotation 29 et le premier élément d'accouplement 10peuvent aussi être deux pièces distinctes fixées l'une à l'autre.According to the embodiment presented here, the first coupling element 10 presented here is part of the rotation subassembly 29 (it is the same part). However, the rotation subassembly 29 and the first coupling element 10 can also be two separate parts fixed to each other.

Premier élément d'accouplementFirst coupling element

Le dispositif d'entrainement 1 comprend un premier élément d'accouplement 10 qui permet de transmettre un mouvement de rotation du sous ensemble de mise en rotation 29 à l'organe de couplage 6 (lorsque l'organe de couplage 6 est dans une première position) ou à un deuxième élément d'accouplement 12 (lorsque l'organe de couplage 6 est dans une deuxième position d'accouplement).The drive device 1 comprises a first coupling element 10 which makes it possible to transmit a rotational movement of the rotation subassembly 29 to the coupling member 6 (when the coupling member 6 is in a first position) or to a second coupling element 12 (when the coupling member 6 is in a second coupling position).

Selon le mode de réalisation ici présenté, le premier élément d'accouplement 10 se présente sous la forme d'une roue avec deux faces et une tranche. Une face 10a présente une roue à rochet. La tranche 10b présente des dentures adaptées pour engrener un engrenage 14 qui sera décrit ci-après. Les dentures de la tranche 10b peuvent être des dentures droites ou hélicoïdales.According to the embodiment presented here, the first coupling element 10 is in the form of a wheel with two faces and a edge. One face 10a has a ratchet wheel. The slice 10b has teeth adapted to mesh with a gear 14 which will be described below. The teeth of section 10b can be straight or helical teeth.

Tel que cela sera décrit ci-après, la face 10a du premier élément d'accouplement 10 est adaptée pour transmettre un mouvement de rotation pour un seul sens de rotation à la roue à rochet 64 de l'organe de couplage 6. Ainsi, dans un premier sens de rotation de la face 10a, le premier élément d'accouplement 10 entraine en rotation la roue à rochet 64. Dans un second sens de rotation de la face 10a, l'accouplement entre la roue à rochet 64 et le premier élément d'accouplement 10 n'est pas possible, et il n'y a pas de transmission de rotation.As will be described below, the face 10a of the first coupling element 10 is adapted to transmit a rotational movement for a single direction of rotation to the ratchet wheel 64 of the coupling member 6. Thus, in a first direction of rotation of the face 10a, the first coupling element 10 rotates the ratchet wheel 64. In a second direction of rotation of the face 10a, the coupling between the ratchet wheel 64 and the first element coupling 10 is not possible, and there is no rotation transmission.

De plus, tel que cela sera décrit ci-après, la tranche 10b permet de transmettre un mouvement de rotation bidirectionnel (i.e. quel que soit le sens de rotation) à un engrenage 14.In addition, as will be described below, the slice 10b makes it possible to transmit a bidirectional rotational movement (i.e. whatever the direction of rotation) to a gear 14.

Le premier élément d'accouplement 10 peut être réalisé en métal (tel que de l'acier, de l'acier inoxydable, ou de l'aluminium), en matériau polymère ou en matériau composite.The first coupling element 10 can be made of metal (such as steel, stainless steel, or aluminum), polymer material or composite material.

Organe de couplageCoupling member

En référence aux figures 1 à 7, l'organe de couplage 6 se présente sous la forme d'une pièce de révolution ayant une section en forme de T. En d'autres termes et de manière très schématique, l'organe de couplage 6 présente une portion d'arbre 61 axiale et une roue transversale 62.With reference to figures 1 to 7 , the coupling member 6 is in the form of a part of revolution having a T-shaped section. In other words and very schematically, the coupling member 6 has a shaft portion 61 axial and a transverse wheel 62.

En sus, l'organe de couplage 6 est creux pour accueillir l'organe d'entrainement 30. Typiquement l'organe de couplage 6 peut présenter un alésage avec des cannelures pour avoir une liaison à cannelures avec l'organe d'entrainement 30. En effet, les cannelures sont particulièrement adaptées pour transmettre un couple de rotation.In addition, the coupling member 6 is hollow to accommodate the drive member 30. Typically the coupling member 6 may have a bore with grooves to have a grooved connection with the drive member 30. In fact, the splines are particularly suited to transmitting a rotational torque.

Selon une disposition particulièrement avantageuse, l'organe de couplage 6 comprend une portion de roue à rochet 64 permettant de transmettre un mouvement selon un unique sens de rotation. D'une manière préférentielle, la roue transversale 62 comprend la portion de roue à rochet 64.According to a particularly advantageous arrangement, the coupling member 6 comprises a ratchet wheel portion 64 making it possible to transmit a movement in a single direction of rotation. Preferably, the transverse wheel 62 comprises the ratchet wheel portion 64.

Il est rappelé qu'une roue à rochet est un dispositif anti-retour forçant un mécanisme rotatif à tourner dans un seul sens. Cette roue est munie sur tout son pourtour d'encoches provoquant dans le sens voulu le soulèvement d'un cliquet (ou d'une roue à rochet complémentaire) pour lui laisser le passage mais bloquée par lui dans l'autre sens. D'une manière connue on trouve des roues à rochet dans les mécanismes de roue libre.Remember that a ratchet wheel is an anti-return device forcing a rotating mechanism to turn in one direction. This wheel is fitted all around with notches causing a pawl (or a complementary ratchet wheel) to lift in the desired direction to allow it passage but blocked by it in the other direction. In a known manner, ratchet wheels are found in freewheel mechanisms.

La portion de roue à rochet 64 est adaptée pour coopérer avec la roue à rochet de la face 10a du premier élément d'entrainement 10, lorsque l'organe de couplage 6 est dans une première position d'accouplement.The ratchet wheel portion 64 is adapted to cooperate with the ratchet wheel of the face 10a of the first drive element 10, when the coupling member 6 is in a first coupling position.

De plus, selon une disposition particulièrement avantageuse, l'organe de couplage 6 comprend une portion de roue à crabots 68 permettant de transmettre un mouvement selon deux sens de rotation. D'une manière préférentielle, la roue transversale 62 comprend la portion de roue à crabots 68.Furthermore, according to a particularly advantageous arrangement, the coupling member 6 comprises a portion of a dog wheel 68 making it possible to transmit movement in two directions of rotation. Preferably, the transverse wheel 62 comprises the dog wheel portion 68.

Il est rappelé que selon une définition communément admise, un crabot est l'accouplement direct de deux pièces métalliques par dents et rainures. En d'autres termes, un système à crabots est un système mécanique qui rend solidaires au moyen de crabots deux pièces en rotation, par solidaire il est entendu que les deux pièces sont liées en rotations de sorte à ne former qu'un seul ensemble mécanique mobile en rotation.It is recalled that according to a commonly accepted definition, a clutch is the direct coupling of two metal parts by teeth and grooves. In other words, a clutch system is a mechanical system which connects two rotating parts by means of clutches. By integral it is understood that the two parts are linked in rotation so as to form only one mechanical assembly. mobile in rotation.

Tel que cela sera décrit ci-après, la portion de roue à crabot 68 est adaptée pour coopérer avec un deuxième élément d'accouplement qui sera décrit ci-après, lorsque l'organe de couplage 6 est dans une deuxième position d'accouplement.As will be described below, the clutch wheel portion 68 is adapted to cooperate with a second coupling element which will be described below, when the coupling member 6 is in a second coupling position.

Selon une disposition préférentielle, la portion de roue à rochet 64 et la portion de roue à crabots 68 font toutes les deux parties de la roue transversale 62. Plus précisément, selon le mode de réalisation présenté sur les figures 1 à 7, la portion de roue à rochet 64 et la portion de roue à crabots 68 constituent chacune une face de la roue transversale 62. Selon ce mode de réalisation, la portion de roue à rochet 64 et la portion de roue à crabot 68 sont axialement opposées. Tel que cela sera décrit ci-après, il s'agit là d'une disposition avantageuse permettant de passer d'un mode de rotation unidirectionnel à un mode de rotation bidirectionnel par une simple translation de l'organe de couplage 6.According to a preferred arrangement, the ratchet wheel portion 64 and the dog wheel portion 68 both form parts of the transverse wheel 62. More precisely, according to the embodiment presented on the figures 1 to 7 , the ratchet wheel portion 64 and the dog wheel portion 68 each constitute a face of the transverse wheel 62. According to this embodiment, the ratchet wheel portion 64 and the dog wheel portion 68 are axially opposed . As will be described below, this is an advantageous arrangement making it possible to move from a unidirectional rotation mode to a bidirectional rotation mode by a simple translation of the coupling member 6.

En sus, l'organe de couplage 6 comprend un épaulement 69 positionné à une extrémité de la portion d'arbre 61. Tel que cela sera décrit ci-après, l'épaulement 69 est adapté pour coopérer avec un levier 8.In addition, the coupling member 6 comprises a shoulder 69 positioned at one end of the shaft portion 61. As will be described below, the shoulder 69 is adapted to cooperate with a lever 8.

L'organe de couplage 6 peut être réalisé en métal (tel que de l'acier, de l'acier inoxydable, ou de l'aluminium), en matériau polymère ou en matériau composite.The coupling member 6 can be made of metal (such as steel, stainless steel, or aluminum), polymer material or composite material.

Organe d'entrainementDrive body

L'organe d'entrainement 30 est une pièce de révolution présentant une surface extérieure cannelée conçue et configurée pour être introduite dans un alésage de l'organe de couplage 6. Comme indiqué précédemment, les cannelures sont une disposition particulièrement avantageuse, permettant une transmission optimale d'un couple. Il est précisé que la liaison par cannelure rend l'organe d'entrainement 30 solidaire en rotation de l'organe de couplage 6.The drive member 30 is a part of revolution having a grooved exterior surface designed and configured to be introduced into a bore of the coupling member 6. As indicated previously, the grooves are a particularly advantageous arrangement, allowing optimal transmission of a couple. It is specified that the spline connection makes the drive member 30 integral in rotation with the coupling member 6.

En sus, l'organe d'entrainement 30 présente une empreinte prismatique adaptée pour recevoir une extrémité d'un bras de travail des aliments.In addition, the drive member 30 has a prismatic footprint adapted to receive one end of a food processing arm.

L'empreinte prismatique peut par exemple être hexagonale, cette géométrie étant particulièrement adaptée pour transmettre un couple et un mouvement de rotation.The prismatic footprint can for example be hexagonal, this geometry being particularly suitable for transmitting a torque and a rotational movement.

Deuxième élément d'accouplementSecond coupling element

Le dispositif d'entrainement 1 comprend un deuxième élément d'accouplement 12 qui permet de transmettre une rotation du premier élément d'accouplement 10 à l'organe de couplage 6, lorsque l'organe de couplage 6 est dans une deuxième position.The drive device 1 comprises a second coupling element 12 which makes it possible to transmit a rotation of the first coupling element 10 to the coupling member 6, when the coupling member 6 is in a second position.

Le deuxième élément d'accouplement 12 est un organe de transmission de rotation complémentaire de la roue à crabots 68. En d'autres termes, le deuxième élément d'accouplement 12 est adapté pour transmettre un mouvement de rotation pour les deux sens de rotation de la roue à crabots 68. Ainsi, lorsqu'il est accouplé à la roue à crabots 68, l'élément d'accouplement 10b transmet la rotation a l'élément d'accouplement 14, 14a étant en prise avec 10b et 14b étant en prise avec 12b, ainsi 12 est entraîné en rotation à son tour, le deuxième élément d'accouplement 12a entraine en rotation la roue à crabots 68 et transmettre ce mouvement de rotation, quel que soit le sens de rotation de la roue à crabots 68 (et donc de l'organe d'entrainement 30).The second coupling element 12 is a complementary rotation transmission member of the dog wheel 68. In other words, the second coupling element 12 is adapted to transmit a rotational movement for the two directions of rotation of the dog wheel 68. Thus, when coupled to the dog wheel 68, the coupling element 10b transmits rotation to the coupling element 14, 14a being engaged with 10b and 14b being engaged with 12b, thus 12 is driven in rotation in turn, the second coupling element 12a drives the dog wheel 68 in rotation and transmits this rotational movement, whatever the direction of rotation of the dog wheel 68 (and therefore of the drive member 30).

Typiquement le deuxième élément d'accouplement 12 peut présenter une portion de roue à crabots complémentaire de la roue à crabots 68.Typically the second coupling element 12 may have a portion of a dog wheel complementary to the dog wheel 68.

Selon le mode de réalisation ici présenté, le deuxième élément d'accouplement 12 se présente sous la forme d'une roue avec deux faces et une tranche. Une face 12a est adaptée pour être accouplée à la roue à crabots 68. La tranche 12b présente des dentures adaptées pour engrener un engrenage 14 qui sera décrit ci-après. Les dentures de la tranche 12b peuvent être des dentures droites ou hélicoïdales.According to the embodiment presented here, the second coupling element 12 is in the form of a wheel with two faces and a edge. A face 12a is adapted to be coupled to the dog wheel 68. The edge 12b has teeth adapted to mesh with a gear 14 which will be described below. The teeth of section 12b can be straight or helical teeth.

Le deuxième élément d'accouplement 12 peut être réalisé en métal (tel que de l'acier, de l'acier inoxydable, ou de l'aluminium), en matériau polymère ou en matériau composite.The second coupling element 12 can be made of metal (such as steel, stainless steel, or aluminum), polymer material or composite material.

CentrageCentering

Le sous ensemble de mise en rotation 29, le premier élément d'accouplement 10, l'organe de couplage 6, le deuxième élément d'accouplement 12 et l'organe d'entraînement 30 sont des pièces mobiles en rotation.The rotation sub-assembly 29, the first coupling element 10, the coupling member 6, the second coupling element 12 and the drive member 30 are rotating movable parts.

Selon le mode de réalisation ici présenté, ces pièces sont mobiles en rotation autour d'un même axe de rotation et sont empilées sur un arbre primaire 2. Il est précisé que selon l'exemple ici présenté l'arbre primaire 2 est fixe et ne transmet aucun couple. Ainsi, selon le mode de réalisation ici présenté, l'arbre primaire 2 a uniquement une fonction de centrage et de guidage en rotation.According to the embodiment presented here, these parts are movable in rotation around the same axis of rotation and are stacked on a primary shaft 2. It is specified that according to the example presented here the primary shaft 2 is fixed and does not transmits no torque. Thus, according to the embodiment presented here, the primary shaft 2 only has a centering and rotation guiding function.

EngrenageGear

Selon le mode de réalisation ici présenté, le dispositif d'entrainement 1 comprend un engrenage 14 positionnés sur un arbre secondaire 4. Tout comme l'arbre primaire 2, l'arbre secondaire 4 est fixe et rempli simplement une fonction de centrage en rotation de l'engrenage 14.According to the embodiment presented here, the drive device 1 comprises a gear 14 positioned on a secondary shaft 4. Just like the primary shaft 2, the secondary shaft 4 is fixed and simply fulfills a rotational centering function. gear 14.

L'engrenage 14 permet de relier en rotation le premier élément d'accouplement 10 et le deuxième élément d'accouplement 12, lorsque l'organe de couplage est en deuxième position d'accouplement.The gear 14 makes it possible to connect in rotation the first coupling element 10 and the second coupling element 12, when the coupling member is in the second coupling position.

De plus, l'engrenage 14 permet de modifier un couple et une vitesse de rotation d'un mouvement transmis du premier élément d'accouplement 10 au deuxième élément 12.In addition, the gear 14 makes it possible to modify a torque and a rotational speed of a movement transmitted from the first coupling element 10 to the second element 12.

Plus précisément, l'engrenage 14 est constitué de deux roues dentées 14a et 14b empilée axialement par rapport à l'arbre secondaire 4.More precisely, the gear 14 consists of two toothed wheels 14a and 14b stacked axially relative to the secondary shaft 4.

Une première roue dentée 14a est adaptée pour être engrenée avec le premier élément d'accouplement 10, et plus particulièrement, avec la tranche 10b du premier élément d'accouplement 10.A first toothed wheel 14a is adapted to be meshed with the first coupling element 10, and more particularly, with the edge 10b of the first coupling element 10.

Une deuxième roue dentée 14b est adaptée pour être engrenée avec le deuxième élément d'accouplement 12, et plus particulièrement, avec la tranche 12b du deuxième élément d'accouplement 12.A second toothed wheel 14b is adapted to be meshed with the second coupling element 12, and more particularly, with the edge 12b of the second coupling element 12.

D'une manière particulièrement avantageuse, la première roue dentée 14a et la deuxième roue dentée 14b peuvent présenter des diamètres différents. Cette disposition permet d'avoir un rapport de transmission différents entre les deux roues dentées. Ainsi, le premier élément d'accouplement 10 est engrené avec la première roue dentée 14a, la vitesse de rotation et le couple transmis par la deuxième roue dentée 14b au deuxième élément d'accouplement 12. La différence de diamètre entre la premier roue dentée 14a et la deuxième roue dentée 14b permet de modifier la vitesse de rotation et le couple transmis.In a particularly advantageous manner, the first toothed wheel 14a and the second toothed wheel 14b can have different diameters. This arrangement makes it possible to have a different transmission ratio between the two gear wheels. Thus, the first coupling element 10 is meshed with the first toothed wheel 14a, the rotation speed and the torque transmitted by the second toothed wheel 14b to the second coupling element 12. The difference in diameter between the first toothed wheel 14a and the second toothed wheel 14b makes it possible to modify the speed of rotation and the transmitted torque.

Typiquement, l'engrenage 14 est choisi pour permettre une augmentation de la vitesse de rotation, de sorte que la vitesse de rotation du deuxième élément d'accouplement 12 soit plus importante que la vitesse de rotation du premier élément d'accouplement 10.Typically, the gear 14 is chosen to allow an increase in the rotation speed, so that the rotation speed of the second coupling element 12 is greater than the rotation speed of the first coupling element 10.

Ainsi, en d'autres termes, l'engrenage 14 en combinaison avec le premier élément d'accouplement 10 et le deuxième élément d'accouplement 12 forme une boite de vitesse.So, in other words, the gear 14 in combination with the first coupling element 10 and the second coupling element 12 forms a gearbox.

Moyens de changement de positionMeans of changing position

Comme indiqué précédemment, l'organe de couplage 6 est mobile en translation entre deux positions de couplage.As indicated previously, the coupling member 6 is movable in translation between two coupling positions.

Le déplacement et le maintien en position de l'organe de couplage 6 est permis par des moyens de déplacement.The movement and maintenance in position of the coupling member 6 is enabled by movement means.

Selon le mode de réalisation ici présenté, les moyens de déplacement comprennent au moins un organe élastique 16, un levier 8 et un actionneur 20.According to the embodiment presented here, the movement means comprise at least one elastic member 16, a lever 8 and an actuator 20.

Selon l'exemple ici présenté, les moyens de déplacement comprennent deux organes élastiques 16a et 16b.According to the example presented here, the movement means comprise two elastic members 16a and 16b.

De plus, selon l'exemple ici présenté, les organes élastiques 16a et 16b sont des ressorts à spirales. De même, l'actionneur 20 peut être un bouton poussoir.Furthermore, according to the example presented here, the elastic members 16a and 16b are spiral springs. Likewise, the actuator 20 can be a push button.

Tel que cela est représenté sur les figures, le levier 8 est fixé à l'actionneur 20 par une vis. Ainsi, le levier 8 et l'actionneur 20 sont solidaires en translation.As shown in the figures, the lever 8 is fixed to the actuator 20 by a screw. Thus, the lever 8 and the actuator 20 are integral in translation.

Une extrémité du levier 8 présente une forme de fourche à deux dents. Cette extrémité est adaptée pour être positionnée contre l'épaulement 69 pour déplacer en translation l'organe de couplage 6, entre la première position de couplage et la deuxième position de couplage.One end of the lever 8 has the shape of a two-pronged fork. This end is adapted to be positioned against the shoulder 69 to move the coupling member 6 in translation, between the first coupling position and the second coupling position.

Plus précisément, un appui d'un utilisateur sur l'actionneur permet de déplacer en translation le levier 8 pour passer de la première position de couplage à la deuxième position de couplage.More precisely, pressing the actuator by a user makes it possible to move the lever 8 in translation to move from the first coupling position to the second coupling position.

Les deux organes élastiques 16a et 16b, sont positionnés de manière à contrer le mouvement de l'actionneur. Ainsi, les deux organes élastiques 16a et 16b maintiennent le levier 8 en première position de couplage. En d'autres termes, les organes élastiques 16a et 16b maintiennent le levier 8 en première position (i.e. il nécessaire qu'un utilisateur maintienne un appui sur l'actionneur 20 pour positionner et maintenir le levier en deuxième position. En d'autres termes encore, les organes élastiques 16a et 16b exercent un effort sur le levier 8 pour le positionner automatiquement en première positionThe two elastic members 16a and 16b are positioned so as to counter the movement of the actuator. Thus, the two elastic members 16a and 16b maintain the lever 8 in the first coupling position. In other words, the elastic members 16a and 16b maintain the lever 8 in the first position (ie it is necessary for a user to maintain pressure on the actuator 20 to position and maintain the lever in the second position. In other words still, the elastic members 16a and 16b exert a effort on lever 8 to automatically position it in first position

Appareil culinaireCulinary appliance

Selon un deuxième aspect, tel que représenté sur les figures 8 et 9, l'invention concerne aussi un appareil culinaire 100 mélangeur et/ou broyeur comprenant un dispositif d'entrainement 1 selon l'invention.According to a second aspect, as represented on the figures 8 And 9 , the invention also relates to a culinary appliance 100 mixer and/or grinder comprising a drive device 1 according to the invention.

L'appareil culinaire 100 comprend un bol 101 et un couvercle 102 conçu et configuré pour fermer le bol 101.The culinary appliance 100 includes a bowl 101 and a lid 102 designed and configured to close the bowl 101.

Selon le mode de réalisation ici présenté, le dispositif d'entrainement 1 est contenu dans le couvercle 102.According to the embodiment presented here, the drive device 1 is contained in the cover 102.

En sus, l'appareil culinaire 100 peut comprendre d'un bras de travail des aliments pour mélanger ou broyer. Un bras de travail des aliments est positionné dans le bol 101 et connecté à l'organe d'entrainement 30 du dispositif d'entrainement 1.In addition, the culinary appliance 100 may include a food working arm for mixing or grinding. A food working arm is positioned in the bowl 101 and connected to the drive member 30 of the drive device 1.

FonctionnementFunctioning

Le fonctionnement va maintenant être décrit en considérant que le dispositif d'entrainement 1 est intégré dans un appareil culinaire 100. Bien entendu le fonctionnement du dispositif d'entrainement 1 ne change pas, qu'il soit ou non intégré dans un appareil culinaire 100.The operation will now be described considering that the training device 1 is integrated into a culinary appliance 100. Of course the operation of the training device 1 does not change, whether or not it is integrated into a culinary appliance 100.

Comme indiqué précédemment, le levier 8 positionne naturellement (par défaut) l'organe de couplage 6 dans la première position de couplage. Dans cette position seule une rotation unidirectionnelle est permise.As indicated previously, the lever 8 naturally positions (by default) the coupling member 6 in the first coupling position. In this position only unidirectional rotation is permitted.

Cette position est préférable pour découper des aliments durs, comme par exemple des noisettes. Ainsi typiquement, pour découper des aliments durs un utilisateur connectera un bras de travail muni de lames tranchantes à l'organe d'entraînement 30.This position is preferable for cutting hard foods, such as hazelnuts. Thus typically, to cut hard foods a user will connect a working arm provided with sharp blades to the drive member 30.

Puis l'utilisateur pourra se saisir de la poignée et tirer sur la corde 24 pour mettre en rotation le sous ensemble de mise en rotation 29.Then the user can grab the handle and pull on the rope 24 to rotate the rotation subassembly 29.

La rotation du sous ensemble de mise en rotation 29 est directement transmise à l'organe de couplage 6 par l'intermédiaire de la face 10a en contact avec la face 64The rotation of the rotation subassembly 29 is directly transmitted to the coupling member 6 via the face 10a in contact with the face 64

Ainsi, dans le cas de la rotation transmise par la traction sur la corde, le premier élément d'accouplement 10 entraine en rotation l'organe de couplage 6, qui est solidaire en rotation de l'organe d'entrainement 30, et l'organe d'entrainement 30 entraine en rotation un ensemble de couteaux (ou un autre outil culinaire d'un bras de travail des aliments).Thus, in the case of rotation transmitted by traction on the rope, the first coupling element 10 drives in rotation the coupling member 6, which is integral in rotation with the drive member 30, and the drive member 30 rotates a set of knives (or another culinary tool of a food processing arm).

Une fois que la corde est complétement déroulée, l'utilisateur laisse le ressort de rappel la réenrouler. Le sous ensemble de mise en rotation 29 et le premier élément d'accouplement 10 tournent alors en sens inverse. Lorsque l'organe de couplage 6 est dans la première position de couplage, la roue à rochet 64 ne permet pas la transmission du mouvement de rotation du premier élément d'accouplement 10 vers l'organe de couplage 6. Cette disposition est particulièrement avantageuse dans le cas où l'utilisateur désire hacher des aliments durs car il est préférable que les lames du bras de travail tournent uniquement sous l'action du tirage de la corde 24 (force maximale) et débraye quand le ressort 26 re-enroule la corde sur 10. De plus, la plupart des bras de travails munis de lames présentent un seul côté tranchant.Once the rope is completely unwound, the user lets the return spring rewind it. The rotation subassembly 29 and the first coupling element 10 then rotate in the opposite direction. When the coupling member 6 is in the first coupling position, the ratchet wheel 64 does not allow the transmission of the rotational movement of the first coupling element 10 to the coupling member 6. This arrangement is particularly advantageous in the case where the user wishes to chop hard foods because it is preferable that the blades of the working arm rotate only under the action of the pulling of the rope 24 (maximum force) and disengage when the spring 26 rewinds the rope on 10. In addition, most work arms equipped with blades have only one cutting side.

A mesure que le hachage est opéré, les morceaux hachés deviennent de plus en plus petits, il peut donc devenir intéressant d'augmenter la vitesse de rotation des couteaux. De même, lorsque l'appareil culinaire est utilisé pour réaliser un mélange ou une émulsion, l'utilisateur préférera avoir une vitesse de rotation de l'outil élevée.As the chopping is carried out, the chopped pieces become smaller and smaller, so it may become interesting to increase the rotation speed of the knives. Likewise, when the culinary appliance is used to make a mixture or an emulsion, the user will prefer to have a high rotation speed of the tool.

Pour ce faire, l'utilisateur peut enfoncer l'actionneur 20. En étant enfoncé, l'actionneur 20 déplace en translation le levier 8. Le déplacement du levier 8 positionne l'organe de coupage 6 en deuxième position de couplage. Dans cette position, la roue à crabots 68 de l'organe de couplage 6 est couplée au deuxième élément d'accouplement 12. Comme expliqué précédemment, l'accouplement avec des crabots permet d'avoir une transmission de rotation bidirectionnelle.To do this, the user can press the actuator 20. While pressed, the actuator 20 moves the lever 8 in translation. The movement of the lever 8 positions the cutting member 6 in the second coupling position. In this position, the dog wheel 68 of the coupling member 6 is coupled to the second coupling element 12. As explained previously, coupling with dogs makes it possible to have a bidirectional rotation transmission.

Dans cette configuration, la rotation du sous ensemble de mise en rotation 29 est transmise au premier élément d'accouplement 14a via les faces latérales 10b, les face latérales 14b transmettent à leur tour un mouvement de rotation à l'élément 12 via la face 12b.In this configuration, the rotation of the rotation subassembly 29 is transmitted to the first coupling element 14a via the side faces 10b, the side faces 14b in turn transmit a rotational movement to the element 12 via the face 12b .

L'élément 12 étant en rotation, la face 12a transmet via la face 68 un mouvement de rotation a la pièce 6.la pièce 6 via les cannelures internes transmet finalement un mouvement de rotation a la pièce 30 et donc au bras de travail.The element 12 being in rotation, the face 12a transmits via the face 68 a rotational movement to the part 6. the part 6 via the internal grooves finally transmits a rotational movement to the part 30 and therefore to the working arm.

La liaison à crabots permet que quel que soit le sens de rotation du sous ensemble de mise en rotation 29 (sens de rotation de traction de la corde ou sens de rotation inverse du réenroulèrent par le ressort de rappel), ce mouvement de rotation sera transmis à l'organe d'entrainement 30. En d'autres termes, lorsque l'organe de couplage 6 est en deuxième position de couplage, quel que soit le sens de rotation du sous ensemble de mise en rotation 29 et de l'organe de couplage 6, la rotation est transmise au deuxième élément d'accouplement 12. En outre comme indiqué précédemment, le rapport de réduction de la liaison entre la face latérale 10b, l'engrenage 14 et le deuxième élément d'accouplement 12 est choisi pour privilégier une vitesse élevée (par rapport à la vitesse de rotation obtenue lorsque l'organe de couplage est en première position de couplage).The claw connection allows that whatever the direction of rotation of the rotation sub-assembly 29 (direction of rotation of traction of the rope or opposite direction of rotation of the rewound by the return spring), this rotational movement will be transmitted to the drive member 30. In other words, when the coupling member 6 is in the second coupling position, whatever the direction of rotation of the rotation sub-assembly 29 and the coupling member 6, the rotation is transmitted to the second coupling element 12. Furthermore as indicated previously, the reduction ratio of the connection between the lateral face 10b, the gear 14 and the second coupling element 12 is chosen to favor a high speed (compared to the rotation speed obtained when the coupling member is in the first coupling position).

Il est précisé que lorsque l'utilisateur relâche l'actionneur 20, les organes élastiques 16a et 16b repositionnent automatiquement l'organe de couplage 6 en première position de couplage.It is specified that when the user releases the actuator 20, the elastic members 16a and 16b automatically reposition the coupling member 6 in the first coupling position.

Cette disposition est particulièrement avantageuse car elle évite une potentielle confusion pour l'utilisateur. Il sait que par défaut, l'organe de couplage 6 est en première position de couplage. De plus, cette disposition permet de protéger le matériel. En effet, il est préférable d'avoir par défaut une vitesse de rotation plus faible. Dans le cas contraire, le matériel pourrait être endommagé si un utilisateur démarrait le hachage d'un gros morceau de viande à vitesse élevée. Le bras de travail n'aurait pas assez de couple pour couper la viande.This arrangement is particularly advantageous because it avoids potential confusion for the user. He knows that by default, the coupling member 6 is in the first coupling position. In addition, this arrangement helps protect the equipment. Indeed, it is preferable to have a lower rotation speed by default. Otherwise, the equipment could be damaged if a user starts grinding a large piece of meat at high speed. The work arm would not have enough torque to cut the meat.

Claims (14)

  1. Rotary drive device (1) for a mixing or grinding cooking appliance (100), the drive device (1) comprising
    (i) a rotary subassembly (29),
    (ii) a rotary drive member (30) of a food processing arm, and
    (iii) a rotary coupling member (6) for coupling the rotary subassembly (29) to the drive member (30) in order to transmit a rotational movement from the rotary subassembly (29) to the drive member (30),
    the device being characterised in that the coupling member (6) is movable between a first position in which the coupling member (6) is suitable for transmitting a motion in a single direction of rotation of the rotary subassembly (29) and a second position in which the coupling member (6) is suitable for transmitting a motion in two directions of rotation of the rotary subassembly (29).
  2. Drive device (1) according to claim 1, wherein the coupling member (6) comprises a ratchet wheel portion (64) for transmitting a motion in a single direction of rotation.
  3. Drive device (1) according to claim 2, comprising a first coupling element (10a) rotationally connected to the rotary subassembly (29) and suitable for being coupled to the ratchet wheel portion (64) of the coupling member (6).
  4. Drive device (1) according to any of the preceding claims, wherein the coupling member (6) comprises a dog clutch wheel portion (68) for transmitting a motion in two directions of rotation.
  5. Drive device (1) according to claim 4, comprising a second coupling element (12a) suitable for being coupled to the dog clutch wheel portion (68) of the coupling member (6), in order to be rotationally connected to the drive member (30).
  6. Drive device (1) according to claim 5, comprising gearing (14) in two stages (14a and 14b) interposed between the first coupling element (10b) and the second coupling element (12b), for modifying a torque and a rotational speed of a motion transmitted from the first coupling element (10b) to the second coupling element (12b), when the second coupling element (12a) is coupled to the dog clutch wheel portion (68) of the coupling member (6).
  7. Drive device (1) according to any of the preceding claims, wherein the coupling member (6) is translatable between the first position and the second position.
  8. Drive device (1) according to claim 7, comprising a lever (8) for moving the coupling member (6) in translation between the first position and the second position.
  9. Drive device (1) according to claim 8, wherein at least one elastic member (16) exerts a force on the lever (8) to automatically position it in the first position.
  10. Drive device (1) according to any of claims 8 or 9, wherein an actuator (20) is suitable for positioning and holding the lever (8) in the second position.
  11. Drive device (1) according to any of the preceding claims, wherein the rotary subassembly (29) comprises a reel (10) comprising a cord (24) and a return spring (26), the reel (10) driving the rotary subassembly (29) in rotation.
  12. Mixing or grinding cooking appliance (100) comprising a drive device (1) according to any of the preceding claims.
  13. Cooking appliance (100) according to claim 12, comprising a bowl (101) and a lid (102) suitable for closing the bowl (101), the drive device (1) being contained in the lid (102).
  14. Cooking appliance (100) according to any of claims 12 or 13, comprising a removable food processing arm for mixing or grinding, the food processing arm being connected to the drive member (30) of the drive device (1).
EP22195792.1A 2021-09-23 2022-09-15 Drive device with unidirectional or bidirectional rotation Active EP4154777B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2110039A FR3127108B1 (en) 2021-09-23 2021-09-23 Unidirectional or bidirectional rotation drive device

Publications (2)

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EP4154777A1 EP4154777A1 (en) 2023-03-29
EP4154777B1 true EP4154777B1 (en) 2024-06-26

Family

ID=78086595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22195792.1A Active EP4154777B1 (en) 2021-09-23 2022-09-15 Drive device with unidirectional or bidirectional rotation

Country Status (6)

Country Link
US (1) US20230089788A1 (en)
EP (1) EP4154777B1 (en)
JP (1) JP2023046390A (en)
CN (1) CN115844234A (en)
CA (1) CA3172988A1 (en)
FR (1) FR3127108B1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE580073C (en) 1933-07-05 Emil Langenscheid Mixing and beating machine with continuously variable speed change gear
FR2532540A1 (en) 1982-09-08 1984-03-09 Piccini Maurice Apparatus with rotary blade for making sauces
ES2239751T5 (en) 2003-02-19 2011-05-23 Betty Bossi Verlag Ag MANUAL OPERATED DEVICE FOR CUTTING FOOD PRODUCTS.
US8544133B2 (en) 2005-04-26 2013-10-01 Leifheit Ag Mopping device with a multi-turn actuator
EP2015660B1 (en) 2006-05-04 2011-02-23 SwizzzPROZZZ AG Device for processing foodstuffs
ATE481911T1 (en) 2006-05-04 2010-10-15 Swizzzprozzz Ag DEVICE FOR PROCESSING FOOD
DE102013112225B4 (en) 2013-11-06 2022-08-25 Emsa Gmbh food chopper
DE202018105480U1 (en) * 2018-09-24 2020-01-02 Genius Gmbh Food processing device

Also Published As

Publication number Publication date
JP2023046390A (en) 2023-04-04
EP4154777A1 (en) 2023-03-29
FR3127108B1 (en) 2023-09-15
US20230089788A1 (en) 2023-03-23
CN115844234A (en) 2023-03-28
CA3172988A1 (en) 2023-03-23
FR3127108A1 (en) 2023-03-24

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